Quantum Critical Transition Amplifies Magnetoelastic Coupling inMn[N(CN)2]2 | Zendy

Tatiana V. Brinzari | Zendy; P. Chen | Zendy; Qi Sun | Zendy; J. Liu | Zendy; L. C. Tung | Zendy; Yangming Wang | Zendy; John A. Schlueter | Zendy; John Singleton | Zendy; Jamie L. Manson | Zendy; MyungHwan Whangbo | Zendy; A. P. Litvinchuk | Zendy; J. L. Musfeldt | Zendy

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Quantum Critical Transition Amplifies Magnetoelastic Coupling inMn[N(CN)2]2

Author(s) -

Tatiana V. Brinzari,

P. Chen,

Qi Sun,

J. Liu,

L. C. Tung,

Yangming Wang,

John A. Schlueter,

John Singleton,

Jamie L. Manson,

MyungHwan Whangbo,

A. P. Litvinchuk,

J. L. Musfeldt

Publication year - 2013

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.110.237202

Subject(s) - antiferromagnetism , physics , condensed matter physics , coupling (piping) , quantum critical point , octahedron , quantum phase transition , materials science , quantum mechanics , phase transition , metallurgy , ion

We report the discovery of a magnetic quantum critical transition in Mn[N(CN)(2)](2) that drives the system from a canted antiferromagnetic state to the fully polarized state with amplified magnetoelastic coupling as an intrinsic part of the process. The local lattice distortions, revealed through systematic phonon frequency shifts, suggest a combined MnN(6) octahedra distortion+counterrotation mechanism that reduces antiferromagnetic interactions and acts to accommodate the field-induced state. These findings deepen our understanding of magnetoelastic coupling near a magnetic quantum critical point and away from the static limit.

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